Algebra 2
posted by Kenneth .
How many subsets of set T have 2 elemnts if set T has 5 elements?

The number of possible subsets with two elements is the number of combinations possible by choosing two elements out of 5
C(5,2) = 5!/(2!(52)!) = 5*4/2 = 10
For more information, see also:
http://en.wikipedia.org/wiki/Combination
Respond to this Question
Similar Questions

algebra
How many sets are subsets of set B? List the subsets of set B. Which are proper subsets? 
Math
3 questions if you can help me. 1. Calculate the number of subsets and the number of proper subsets for the set. {xx is a day of the week} 2. Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, … 
Math
3 questions if you can help me. 1. Calculate the number of subsets and the number of proper subsets for the set. {xx is a day of the week} 2. Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, … 
Math(combinations) Help
Let Pn be the set of all subsets of the set [n]={1,2,…,n}. If two elements of P5 are chosen at random, the expected number of elements (of [n]) that they have in common can be expressed as a/b where a and b are coprime positive integers. … 
math please helppppppp
For a set of numbers T, we say that T has distinct subset sums if all distinct subsets of T have distinct sums. How many subsets of {1,2,3,4,5,6,7,8} have distinct subset sums? 
math
Let Pn be the set of all subsets of the set [n]={1,2,…,n}. If two distinct elements of P5 are chosen at random, the expected number of elements (of [n]) that they have in common can be expressed as a/b where a and b are coprime positive … 
MATHS
For a set of numbers T, we say that T has distinct subset sums if all distinct subsets of T have distinct sums. How many subsets of {1,2,3,4,5,6,7,8} have distinct subset sums? 
math
Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}. 
Set Theory
Let the Universal Set, S, have 136 elements. A and B are subsets of S. Set A contains 34 elements and Set B contains 98 elements. If Sets A and B have 22 elements in common, how many elements are in A but not in B? 
Algebra
Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many elements are contained in set A?